Thread by @ZHeart11768530

🔴 Coronary Artery Anatomy ❤️🩺⤵️

🔹Two main coronary arteries emanate from the aortic bulb :
• Right coronary artery (RCA)
originates on the right aspect of the aortic bulb.
• Left main coronary artery (LMCA) originates from eft anterior aspect of aortic bulb.

🔹LMCA is short and branches into the two arteries supplying the anterior and left side of the heart, as follows:
• The left anterior descending coronary artery
(LAD).
• The left circumflex coronary artery (LCX).

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🔹Coronary artery dominance: The coronary artery that supplies the PDA (posterior descending coronary artery), which supplies the inferior wall of the left ventricle, determines the coronary artery dominance

👉A right-dominant system implies that the PDA is supplied by the RCA.
👉A left-dominant system implies that the PDA is supplied by the left circumflex coronary artery (LCX).
👉Right-dominant system is by far the most common anatomy, occurring in 90% of all individuals.